Well a year ago I bought my cobra. Has 44k mles on it. Just put the Whipple 2.9l and it made 635/555. ON STOCK CLUTCH. Haven't gotten around to changeing clutch yet. Stock one is holding up good with 305 mt e/t streets on the street. I'm not cheap by any means but I am puting $ into my house so at the moment i can't afford a McLeod twin disk like I want. I wanna take my car to the track so curious how the spec stage 3 will hold. Next spring I plan on a McLeod rxt and 26 spline input shaft/ return fuel system for e85. I am on 93 octane now. Thanks for your help.